Boxed Logo Sign-in

<!--
  A boxed logo badge sits above the card and centres over it. The logo is a
  gradient square with the brand initial - no external asset - and it is
  aria-hidden because the brand name is written out just beneath it, so a screen
  reader is not made to read the same brand twice.
-->
<div class="mx-auto w-full max-w-sm">
  <div class="flex flex-col items-center">
    <span aria-hidden="true" class="grid h-12 w-12 place-items-center rounded-xl bg-gradient-to-br from-blue-600 to-indigo-600 text-lg font-bold text-white shadow-sm">A</span>
    <h1 class="mt-3 text-lg font-bold tracking-tight text-gray-900 dark:text-gray-100">Sign in to Adysre</h1>
  </div>

  <form class="mt-6 space-y-4 rounded-2xl border border-gray-200 bg-white p-6 shadow-sm sm:p-8 dark:border-gray-800 dark:bg-gray-950" action="#" method="post">
    <div>
      <label for="boxed-email" class="block text-sm font-medium text-gray-700 dark:text-gray-300">Email</label>
      <input id="boxed-email" name="email" type="email" autocomplete="email" required placeholder="you@company.com" class="mt-1.5 w-full rounded-lg border border-gray-300 bg-white px-3.5 py-2.5 text-sm text-gray-900 placeholder:text-gray-500 focus-visible:border-transparent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-600 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:placeholder:text-gray-400 dark:focus-visible:ring-blue-400" />
    </div>
    <div>
      <label for="boxed-password" class="block text-sm font-medium text-gray-700 dark:text-gray-300">Password</label>
      <input id="boxed-password" name="password" type="password" autocomplete="current-password" required placeholder="••••••••" class="mt-1.5 w-full rounded-lg border border-gray-300 bg-white px-3.5 py-2.5 text-sm text-gray-900 placeholder:text-gray-500 focus-visible:border-transparent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-600 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:placeholder:text-gray-400 dark:focus-visible:ring-blue-400" />
    </div>
    <button type="submit" class="w-full rounded-lg bg-blue-600 px-5 py-2.5 text-sm font-semibold text-white transition-colors hover:bg-blue-700 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-600 focus-visible:ring-offset-2 focus-visible:ring-offset-white motion-reduce:transition-none dark:focus-visible:ring-blue-400 dark:focus-visible:ring-offset-gray-950">Sign in</button>
  </form>
</div>